Celebrities were so frustrated with the time it took to raise $1 million for Keep a Child Alive’s “Digital Death” campaign, they persuaded a wealthy savior to give them $500,000 so they could get back on Twitter.

The boldfaces agreed to “kill” themselves on social media until they raised a $1 million for the charity, which helps fund HIV/AIDS relief in Africa and India. But it took longer than expected, and insiders say the celebs became frustrated. “It’s the worst mismanagement of star power I’ve ever seen in my life,” said a source close to the program.

Sources said the organization expected to raise the $1 million in a week. But by yesterday, after six days, it had taken in only about $450,000. Stars including Kim Kardashian, who can earn about $10,000 a tweet, started getting itchy fingers.

One source blamed servers that crashed for 12 hours on the first night for the slow-paced donations. Others blamed lack of promotion and overestimating the participants’ Twitter power.

Another source said, “Some stars thought the money would be raised in 24 hours, and were embarrassed that critics said it proves nobody cares about their Twitter presence.”

Usher was too impatient to wait for the $1 million mark and started tweeting in the early hours of Sunday.

Rahr, who recently sold his pharmaceutical distribution company Kinray for $1.3 billion, is a big donor to the Make-A-Wish Foundation and other charities. He said, “I heard through the grapevine that they were short on their goals, and I wanted to help. I sold my company, and I wanted to give back to others in the Empire State.” A rep for Keep a Child Alive had no comment.